Metallic roofing-plate



(No Model.)

G. PATTEN.

METALLIC ROOFING PLATE.

No. 403,444. Patented May 144, 1889.

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UNITED STATES PATENT OFFICE.

GEORGE PATTEN, OF OLARKSVILLE, ASSIGNOR TO HIMSELF, AND MOULTRIE PATTEN, OF NASHVILLE, TENNESSEE.

METALLIC ROOFING-PLATE.

SPECIFICATION forming part of Letters Patent No. 403,444, dated May 14, 1889.

Application filed October 2, 1888. Serial No. 286,978. (No model.)

My invention has reference to the construction of the side joints of metallic roofingplates, and is designed to provide a watertight connection which shall be easily formed, take up the least possible quantity of metal in its construction, and be readily applied, thus favoring economy in both construction and use without detracting from the qualities essential to a first-class roofing-plate.

The natureof the invention consists in the construction of a roofing-plate having one side of the sheet folded over upon itself after the free edge thereof has been turned inward, so as to form a hook, the fold being flattened at its double edge, so as to bring the said hook 3o nearly or altogether in contact with the plateface, with the convex surface of the hook toward the middle of the plate, the double edge to be perforated and constitute the nailing-fiange, while the remainder of the fold 3 5 forms the core of the joint, the other side of the sheet having its edge formed into an under-turned hook of sufficient size to closely embrace the core-hook, while its free edge passes between the said hook and the plate- 1,0 face, the close contact of the double flange giving the core a spring that secures the embracing-hook and makes a tight joint, admitting of the contraction and expansion due to change of temperature.

In the drawings, A represents a metallic roofing-plate, one lateral edge, a, of which is doubled over, and the free edge of this doubled portion curved under so as to form a head, which rests upon and is held in contact with the upper face of the plate by reason of the elasticity of the said doubled portion. The opposite edge, 6, of the plate is curved or hook-shaped, as shown at c, to engage the beaded edge a of an adjacent plate, the said curved or hook-shaped edge 0 being adapted to pass under the bead of the adjacent plate and be firmly held by the spring of the doubled edge a against the face of the plate, so as to form a water-tight joint between contiguous plates. To attach these plates to a roof, the operator will bend down the edge I) and nail it to the edge of the sheathing at the lower left-hand corner of the roof to commence the first course. The right-hand edge of the plate is secured by nailing through the turned-over edge a, perforations being made for that purpose. The hooked edge 0 of the next plate is made to engage and pass under the doubled or beaded edge of the leading plate and drawn into close contact therewith. It is then secured by nailing through the doubled edge, when the two plates will be securely united by a water-tight joint, which will admit of the contraction and expansion due to changes of temperature. The operation is thus continued throughout the lower course. The succeeding courses are laid in the same manner, giving them a suitable lap and making adjacent courses to break joints; but as my invention refers only to the lateral joints details regarding the lap are unnecessary here.

The advantages of this plate are simplicity of construction, ease of attachment, and impossibility of leakage. 8 5

Having thus described my invention, whatI claim as new, and desire to secure by Letters Patent, is

1. A metallic roofing-plate having one side folded back to form a nailing-flange and the 0 free edge of said fold turned under between the plate and fold, forming a core whose convex surface is adapted to engage and hold the hooked edge of an adjacent plate and form a joint, substantially as set forth. 9 5

2. A metallic roofing-plate having an underturned hook on one side and the other side folded back and turned under and resting near or upon the upper surface of the plate, so as to form with the hooked edge of an adjacent plate the joint connecting them, substantially as described.

GEORGE PATTEN.

IOO

Witnesses:

E. FERNANDEZ, JOHN F. CARTER. 

